iJishin vs もしゆれ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iJishin
This application transforms your iPhone into a seismometer, allowing you to measure and analyze seismic vibrations. You can upload your observations to share with the public and utilize various tools for wave analysis, including graphical displays of power spectrum and displacement.
- Transforms iPhone into a seismometer
- Measures seismic vibrations
- Analyzes wave data
- Uploads seismic observations
- Graphical display of power spectrum
- Measures velocity and displacement
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iJishin – iPhone seismometer, anytime anywhere, measure and browse. iJishin is a free application that makes your iPhone(iPad, iPod touch) change into a seismometer and a data browser as well as a vibration analyser. You can upload seismic information such as maximum acceleration, “SHINDO”(seismic intensity) , occurrence time, and so on, to open your observation to the public. Please visit: http://www.geonavi.com:8888/ iJishin also provides you an excellent tool to measure acceleration anytime anywhere on any occasion. Feel vibration and measure with iJishin! FEATURES: iJishin draws full ability as a seismometer from iPhone(iPad, iPod touch). Also it provides tools for wave analysis. iJishin uses acceleration sensors installed in iPhone(iPad, iPod touch) to measure earthquake vibrations. Signals of three sensors of the device are sampled with frequency of 100Hz and are given the time stamp every 0.01 sec strictly synchronized with UTC by using outer NTP server. iJishin’s recording process starts/stops when the signal becomes larger/smaller than the triggering level. Allowance durations of the process can be set to save data before/after the signal grows/attenuates to the threshold triggering level. iJishin provides you several tools to display and to analyze quake data saved in your iPhone(iPad, iPod touch): not only a wave browser but also a graphical display of power spectrum, of integration such as velocity and displacement, and of the 2D trajectory of the device.
もしゆれ
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写真を撮ってすぐ判定! もしもいまここで 大地震の揺れに見舞われたら ワタシはどうなる? iPhoneアプリ《もしゆれ》は、いまあなたがいる場所で大地震の揺れに見舞われたら、どんな被害を受ける危険性があるかをシミュレーションします。 【特徴①】写真を撮ってリアルに実感! 写真の中のあなたを見舞うのは「建物倒壊」?「液状化」? 全部で17の判定を用意しました。 【特徴②】今いる場所のデータで判定! 判定の基準には、今いる場所に関係した各種データが盛り込まれています。 【特徴③】結果写真を友達にもシェア! 判定の結果写真はTwitterやFacebookで家族や友達とシェアできます。 もしもの時、今いる場所で自分の身に何が起こるかを具体的にイメージすること。そこから災害への対策は始まります。あらかじめできる準備は何か、いざという時どうすればよいかを考え、防災にお役立てください。 --- Test with a pic right now! If I faced a huge earthquake, what would happen? The iPhone App IFEQ lets you simulate what kind of disaster you might face if you were hit by a huge earthquake at where you are right now. Feature #1: Feel it for real with a pic! Will you in the pic be facing “Building Collapse” or “Liquefaction”? We have 17 possible situations prepared for you. Feature #2: Test with the data of where you are! Various data related to your current location is involved in making the evaluation. Feature #3: Share the result pics with your friends! The pictures of your results can be shared with families and friends via Facebook and/or Twitter. Imagining as a real picture what might happen to you and your loved ones in case of a disaster will be the first step you can take for disaster precautions. Think of what kind of preparation you could do and what should be done in such case, so that it will help you with your disaster prevention. IFEQ is now available in English.
Screenshots
Verdict
The clearest difference is review sentiment: iJishin at 70% against もしゆれ's 25%. iJishin also leads on update cadence (every 3 months vs every 14 months). もしゆれ's advantage is iOS requirement (9.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
iJishin ships an update every 3 months, もしゆれ every 14 months. Both last shipped on November 1, 2026.
| Parameter | iJishin | もしゆれ |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 70.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 109 MB |
| Age rating | 4+ | 9+ |
| Developer | Hakusan Corporation | National Research Institute for Earth Science and Disaster Prevention |
Customer experience
iJishin
もしゆれ
In-app purchases
iJishin
No in-app purchases
もしゆれ
No in-app purchases









